apocalypturd 

Dismissive or derogatory term for doomsday or apocalypse scenarios, and of groups, people or media focused around them. May also encompass conspiracy theories. Usually indicates a self-defeating level of hyperbole or histrionics on the subject's part.

That disaster movie was a pile of apocalypturds.

apocalypturd by One of those things March 2, 2010

Apocalypters 

Usually used to describe a group, or mass of people that for some reason are convinced a certain date is the day of the Apocalypse. They are so far 100% consistent at being wrong.

Did you see those bible tumpers on the corner?
You mean the dumb apocalypters talking about the day of judgement? They are there every week man.

Apocalypters by B A Clay June 7, 2011

apocalyptard 

noun - refers to believers in any lame-brained end-of-the-world theory, particularly those ascribing to the ridiculous 2012 hypothesis.

Glenn Beck, hero and champion to myself and all other apocalyptards, explained how the world will end on a chalkbaord today.

apocalyptard by Le Haineux April 23, 2011

Apocalyptus 

School sucks

Person X: how's life?
Person Y: grrr... apocalyptus!

Apocalyptus by reeeeeally bored kid March 25, 2009